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The free energy generated by ion movement in the cell is used by the cell to do work. Compute the minimum number of millimoles of sodium that would be needed to pump one millimole of calcium ions if the following concentrations were present in the cell. Assume the temperature to be 370C and recall that R=0.008314 kJ/mol-K.
Na+ (aq, 86 mM) -> Na+ (aq, 7.00 mM)
Ca2+ (aq, 18mM) -> Ca2+ (aq, 9.50 x 102 mM)
Calculate the percent yield of 1.0 grams of salicylic acid obtained from the hydrolysis of 1.3 mL of methyl salicylate.
Consider the solubility information BaSO4 = 3.4 ×10 -4 g 100 g H2O at 20 ?C.Calculate the solubility-product constant Ksp
A large amount of aqueous ammonia is added to a Cd^2+ solution and the complex ion Cd(NH3)4^2+ forms. Write the equation for this reaction.
The Reaction 2NOCl(g)---->2NO+CL2(g) has rate-constant values for the reaction of NOCl of 9.3x10^-6/s at 350K and 6.9x10^-4/s at 400K. Calculate activation energy for the reaction. What is the rate constant at 435K?
lithium is the least dense metal known (density: 0.53 g/cm^3) what is the volume occupied by 8.00 x10^3g of lithium.
D2O with a mass concentration of 80 mg/cm3 in a 0.10-mm-long absorption cell is found to have a transmittance of 8.3% for infrared radiation of wavelength 6000 nm. Find the absorbance of the solution and the molar absorption coefficient of lysozym..
Calculate the amount of N2 gas released (in liters at 37°C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
sucrose table sugar has the formula c12h22o11 molar mass342.30 gmol and a food value of 6.49 kjg. determine the
What is the limiting reagent in this procedure? B. Based on your answer to part A, what mass of Fe(C5H5)2 could theoretically be formed? C. A student who carried out this reaction obtained 2.7 g of ferrocene. What was the percent yield for this re..
You have a sugar solution( solution A) with concentration x. You pour 1/4 of this solution into a beaker, and add an equivalent volume of water (solution B)
Question- When mixed with silver nitrate an unknown solution reacted to produce a light brown precipitate that re-dissolved in nitric acid. Treatment of this same unknown solution with barium chloride gave no precipitate.
H2SO4, for the first step instead of concentrated HNO3 . What changes will be observed for the initial reaction with copper metal?
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